Specification Brand : Chicago-Latrobe BulletPoint1 : Short length drill bit offers rigidity to reduce tool deflection and breakage BulletPoint2 : Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials BulletPoint3 : Gold oxide finish lubricates and provides wear resistance on ferrous materials BulletPoint4 : 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging BulletPoint5 : Extra-thick web provides increased strength and rigidity compared to standard drill bits BulletPoint6 : Made in the USA CuttingAngleString : 135.0 degrees ExternallyAssignedProductIdentifier1 : 662355508138 ExternallyAssignedProductIdentifier2 : 0662355508138 ExternallyAssignedProductIdentifier3 : 00662355508138 FinishType : Gold Oxide GpsrSafetyAttestation : 1 ItemDisplayDimensions_Length : 3.8 centimeters ItemName : Chicago Latrobe 559 Cobalt Steel Short Length Drill Bit, Gold Oxide Finish, Round Shank, 135 Degree Split Point, 1/4" Size (Pack of 12) ItemPackageDimensions_Height : 0.508 centimeters ItemPackageDimensions_Length : 12.7 centimeters ItemPackageDimensions_Width : 9.398 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : short-length-drill-bits Manufacturer : Greenfield Industries Material : Cobalt Steel MfgSeriesNumber : 559 ModelNumber : 50813 NumberOfFlutes : 2 NumberOfItems : 12 NumberOfPieces : 12 PackageLevel : unit PartNumber : 50813 ProductDescription : Description:
Material : High Speed Steel 4241 Type : N Type 118 degree Bit Diameter : 6.4mm/0.25" Cutting Edge Length : 72mm/2.83" Total Length : 101mm/3.98" Weight: 16g Main color: Silver HRC: 62-63 Package Content: 1pcs x Twist Drill Bit.
How to Use Twist Drill Bits
Ensure the left and right cutting edges of the drill are symmetrical when drilling. Observe the uniformity of the spark while drilling, adjust the pressure in time, and pay attention to the cooling of the bit.